Under a canopy of eight heart-monitoring screens in a cardiac catheterization lab on a recent Monday, Mayo Clinic doctors briefly paused a procedure treating atrial fibrillation to inspect a new tool: ...

Bernard Snyder's daughter initially thought his relationship with Jo Cartwright was about companionship, then she realized ...

The claim that a child recipient of a heart transplant was able to help catch her donor's killer appeared to originate from a ...